Pattern for casting metal hubs.



No. 638,6!6. Patented Dec. 5, |899. S. C. YST.

PATTERN FOR CASTING METAL HUBS.

(Application filed Apr. 30, 1897.)

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l l l l NTTE STATES PATENT OEEICE.

SOLOMON C. YOST, OF QUINCY, ILLINOIS, ASSIGNOR TO THE ELECTRIC WHEEL COMPANY, OF SAME PLACE.

PATTERN FOR CASTING METAL HUBS.

SPECIFICATION forming part of Letters Patent No. 638,616, dated December 5, 1899.

Application filed April 30, 1897. Serial No. 634,506. (No model.)

2'0 @Z whom t may concern:

Beit known that I, SOLOMON C. Yosr, a citi- Zen of the United States, residing at Quincy, Adams county, State of Illinois, have invented a certain new and useful Improvement in Casting Metal Hubs, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

My invention relates to an improved pattern and flask for casting hubs of metal wheels, and is particularly adapted for employment in casting such hubs where the spokes are arranged in staggered relation with each other.

My invention consists in features of novelty hereinafter fully described and claimed.

Referring to the drawings, Figure I is a top view of the pattern employed in casting hubs, having spoke-sockets connected by webs and one member of the iiask. Fig. II is an edge view of the pattern shown in Fig. I. Fig. III illustrates a sectional view of the pattern, taken on the line III III, Fig. I. Fig. IV is an edge view of one member of the iiask. Fig. V is a view, part in elevation and part in section, illustrating the manner of forming the mold. Fig. VI is asectional view showing the flask and mold with the pattern therein.

Fig. VII is a similar View to-Fig. VI with the pattern removed and the mold ready for the reception of the molten metal. Fig. VIII is a detail elevation of the cast hub with fragments of the spokes cast therein. Fig. IX is a face view of the pattern employed in casting hubs the spoke-sockets of which are unconnected by webs. Fig. X is an edge view of the pattern shown in Fig. IX.

In the drawings, 1 designates a liask divided on a central zigzag line into members 2 and 2a.

3 designates the pattern employed. This pattern is formed with a central body 4, provided with an aperture 5, corresponding to the spindle-receiving aperture of the finished hub. Projecting from the body 4. are protuberances 6, joined by webs '7. The protuberances 6 are of elongated form in crosssection, as shown in Figs. V and VI, such form being adopted for the purpose hereinafter explained.

In preparing for casting, the pattern 3 is iirst placed upon a suitable foundation. One member of the flask is next placed upon the pattern, which by reason of its zigzagend its the opposing Jface of the pattern. Sand is then placed in the member mounted upon the pattern and rammed against the pattern. The member and pattern are then inverted and the second member of the flask is seated upon the pattern in its position on the iirst member, and sand is inserted into the second member and rammed down. The parts at this time appear as shown in Figs. Vand VI. The next step consists in removing the upper iiask member and withdrawing the pattern from the sand. The flask members and mold are then placed together again, the mold produced `by the pattern being complete. On connecting the flask members after the removal of the pattern the coincident portions of the mold are returned to their previous locations, with the result that the por tions of the mold that before were separated by the webs 7 of the pattern now contact with each other, iilling the space between the channels l0, formed by the protuberances 6, the webs 7'having served to produce a parting-line between the sections of the mold. The mold-sections by approaching each other result in the channel-forming portions ofthe mold approaching each other, and thereby diminishing the vertical diameters of such channels from the elongated cross-sectional shape of the protuberances 6 of the pattern.

Each flask member may be provided with a lange 8, in which are openings for the reception of tie-bolts, as shown in Fig. I. The flask members are provided with notches 9, which when the members are placed together, as shown in Fig. VII, after the removal of the pattern, provide openings for the insertion of the wheel-spokes into the mold.

Before introducing the molten metal, which may be poured through a suitable gate in the upper portion of the mold, the spokes of the wheel are inserted in the channels l0 and extend through the openings formed by the notches 9.

l1 designates the hub of the finished casting, having the spokes l2 cast therein.

The patterns shown in Figs. II and III and Figs. IX and X are substantially similar, with IOO staggered spoke-patterns extending therefrom, of the web passing in a zigzag direction between the spoke-patterns and filling the space from the hub-pattern to the end of the spoke-patterns.

SOLOMON O. YOST.

In presence 0f- JOE C. LECHTENBERG, O. T. RITTER. 

